Charles Ellicott Commentary 2 Samuel 23:32

"Eliahba the Shaalbonite, the sons of Jashen, Jonathan," — 2 Samuel 23:32 (ASV)

Of the sons of Jashen, Jonathan. —The preposition of is not in the Hebrew, and should be omitted. For the rest 1 Chronicles 11:34 reads the sons of Hashem the Gizonite. In both the words the sons of may be an accidental repetition of the last three letters of the preceding word; if not, they should be read as part of the proper name, Jashen (Chronicles Hashem), or Bnejashen (Chronicles Bnehashem) the Gizonite. Jonathan is then a separate name.